Re: [tram] TURN server discovery (please discuss!)

Two comments inline below /Karl

-----Ursprungligt meddelande-----
Från: tram [mailto:tram-bounces@ietf.org] För Simon Perreault
Skickat: den 24 mars 2014 18:07
Till: Martin Thomson
Kopia: tram@ietf.org
Ämne: Re: [tram] TURN server discovery (please discuss!)

Le 2014-03-24 12:58, Martin Thomson a écrit :
> Re: WPAD:  This is causing HTTPBIS considerable pain.  If you feel 
> particularly masochistic, or desperate, then perhaps it can be 
> remembered, but any attempt to use WPAD will be sorely regretted.

Duly noted.

[Karl] And an ISP can hardly provision WPAD, can he?

> On 20 March 2014 06:51, Simon Perreault <simon.perreault@viagenie.ca> wrote:
>> Martin Stiemerling proposed that we look at draft-kist-alto-3pdisc 
>> for inspiration. As I understand it, that solution relies on the 
>> client's IP address "owner" (e.g. the ISP or enterprise) to populate 
>> the DNS reverse zone (i.e., in-addr.arpa or ip6.arpa) with 
>> appropriate NAPTR records pointing to the network-provided TURN 
>> server. Can this work? This is a new idea for which I have not seen any discussion yet.

[Karl] Doesn't all reverse DNS lookup methods require that the browser finds its global ip address to begin with - for which you need a stun server? That is the bootstrap problem (how do you find a stun server to find the turn server) where the October discussion on the rtcweb terminated such track.

> 
> ALTO have been covering a lot of the same ground as GEOPRIV.
> draft-ietf-geopriv-res-gw-lis-discovery sits in the RFC editor's 
> queue.  It's the same mechanism.

Thanks for the pointer!

> That said, this is only useful to the extent that the owner of the 
> network you are using is also the one providing the TURN service.

Couldn't the NAPTR record point to a third-party TURN server?

> Is this the operating assumption here?  Or are there other avenues 
> that need to be explored?

Maybe, but I can't think of any.

Simon
--
DTN made easy, lean, and smart --> http://postellation.viagenie.ca
NAT64/DNS64 open-source        --> http://ecdysis.viagenie.ca
STUN/TURN server               --> http://numb.viagenie.ca

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